1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
extern crate pretty_env_logger;
#[macro_use]
extern crate log;
use std::process::exit;
use std::time::Duration;
use actions::Action;
use async_scoped::TokioScope;
use clap::Parser;
use human_panic::setup_panic;
use anyhow::{bail, Context, Result};
#[cfg(unix)]
use tokio::signal::unix::{signal, SignalKind};
use tokio::time::sleep;
mod actions;
mod blockchain;
mod config;
mod message;
mod wallets;
use crate::actions::get_actions;
use crate::message::MessageParams;
use crate::{
blockchain::BlockchainState,
config::{get_config, Args},
wallets::{get_wallets, SafeWalletInfo},
};
fn set_logger() {
pretty_env_logger::formatted_builder()
.filter_module(env!("CARGO_PKG_NAME"), log::LevelFilter::Info)
.parse_default_env()
.init();
}
fn set_signal_handlers() -> Result<()> {
tokio::spawn(async move {
if let Err(e) = tokio::signal::ctrl_c().await {
return e;
}
warn!("received ctrl-c signal. Exiting...");
exit(0)
});
#[cfg(unix)]
tokio::spawn(async move {
let mut stream = match signal(SignalKind::terminate()) {
Err(e) => return e,
Ok(s) => s,
};
stream.recv().await;
warn!("received process termination signal. Exiting...");
exit(0)
});
#[cfg(unix)]
tokio::spawn(async move {
let mut stream = match signal(SignalKind::hangup()) {
Err(e) => return e,
Ok(s) => s,
};
stream.recv().await;
warn!("received process hangup signal. Exiting...");
exit(0)
});
Ok(())
}
async fn run_test_actions(actions: &[&(dyn Action<'_> + Sync)]) {
TokioScope::scope_and_block(|s| {
for &action in actions {
s.spawn(action.run(None));
}
});
}
fn get_and_handle_new_txs(
wallet_info: &SafeWalletInfo,
actions: &[&(dyn Action<'_> + Sync)],
) -> Result<()> {
let mut locked_wallet_info = wallet_info.lock().unwrap();
let txs = locked_wallet_info.get_new_txs();
TokioScope::scope_and_block(|s| {
for tx in txs.iter() {
let params = MessageParams::new(tx, &locked_wallet_info);
s.spawn(async move {
TokioScope::scope_and_block(|s| {
for &action in actions {
s.spawn(action.run(Some(¶ms)));
}
});
});
}
});
Ok(())
}
async fn update_blockchain_thread(blockchain_state: &mut BlockchainState) {
loop {
blockchain_state.update_height();
sleep(Duration::from_secs(60)).await;
}
}
async fn watch_wallet_thread(wallet_info: &SafeWalletInfo, actions: &[&(dyn Action<'_> + Sync)]) {
loop {
if let Err(e) = get_and_handle_new_txs(wallet_info, actions) {
warn!("{:?}", e);
}
}
}
async fn initial_wallet_sync(blockchain_state: &mut BlockchainState, wallets: &[SafeWalletInfo]) {
TokioScope::scope_and_block(|s| {
s.spawn(async { blockchain_state.update_height() });
for wallet_info in wallets {
s.spawn(async {
if let Err(e) = get_and_handle_new_txs(wallet_info, &[]) {
warn!("{:?}", e);
}
});
}
});
}
async fn watch_wallets(
blockchain_state: &mut BlockchainState,
wallets: &[SafeWalletInfo],
actions: &[&(dyn Action<'_> + Sync)],
) {
TokioScope::scope_and_block(|s| {
s.spawn(update_blockchain_thread(blockchain_state));
for wallet_info in wallets {
s.spawn(watch_wallet_thread(wallet_info, actions));
}
});
}
async fn do_main() -> Result<()> {
setup_panic!();
let args = Args::parse();
set_logger();
set_signal_handlers().context("failed to setup a signal termination handler")?;
let config = get_config(&args.config())?;
let actions = get_actions(config.message(), config.actions()).await;
if actions.is_empty() {
bail!("no actions properly configured");
}
let actions_ref = actions.iter().map(Box::as_ref).collect::<Vec<_>>();
if args.test() {
run_test_actions(&actions_ref).await;
return Ok(());
}
let mut blockchain_state = BlockchainState::new(config.electrum())?;
let wallets = get_wallets(config.wallets(), config.electrum());
if wallets.is_empty() {
bail!("no wallets properly configured");
}
if !args.notify_past_txs() {
info!("initial wallet sync");
initial_wallet_sync(&mut blockchain_state, &wallets).await;
}
info!("listening for new relevant events");
watch_wallets(&mut blockchain_state, &wallets, &actions_ref).await;
Ok(())
}
#[tokio::main]
async fn main() {
if let Err(e) = do_main().await {
error!("{:?}", e);
exit(1);
}
}
|
